Results 71 to 80 of about 5,535 (299)
Certain classes of bi-univalent functions with bounded boundary variation [PDF]
, 2017 In their pioneering work dated 2010 on the subject of bi-univalent functions, Srivastava et al. actually revived the study of the coefficient problems involving bi-univalent functions in recent years. Inspired by the pioneering work of Srivastava et Hi.,
ORHAN, Halit +5 more
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Halide Perovskite: A Rich Source of Thermal Insulator
Advanced Science, EarlyView.Halide perovskites exhibit ultralow thermal conductivity driven by intrinsic lattice softness and strong anharmonicity, falling below conventional defect‐engineering limits. Weak metavalent bonding, A‐site rattling, and dynamic octahedral tilting drive phonon scattering to the Ioffe–Regel limit, where wave‐like tunneling replaces particle‐like ...
Haolin Ye +3 more
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Journal of Inequalities and ApplicationsIn recent years, many subclasses of univalent functions, directly or not directly related to the exponential functions, have been introduced and studied. In this paper, we consider the class of S e ∗ $\mathcal{S}^{\ast}_{e}$ for which z f ′ ( z ) / f ( z
Lei Shi +4 more
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Real‐Time Investigation of Interfacial Evolution in Electrochemical Energy Storage Systems via EQCM
Advanced Science, EarlyView.Understanding the electrode/electrolyte interface (EEI) is crucial for supercapacitors and batteries. EQCM, by enabling real‐time monitoring of mass changes during charge–discharge cycles, has evolved into a vital method for analysis of EEI. It provides important insights into charge‐storage mechanisms, electrode structural evolution, ion‐transfer ...
Zixuan Wang, Situo Cheng, Guang Feng
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Univalent harmonic functions defined by Salagean integral operator with respect to symmetric points
Le Matematiche, 2012 In this paper, we define and investigate a subclass of univalent harmonic functions defined by Salagean integral operator with respect to symmetric points.
Sheza El-Deeb +3 more
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Applications of q-Bessel-Struve Functions on Univalent Functions
MathematicsIn this paper, the authors derived some new sufficient conditions for q-close-to-convexity with respect to certain functions involving three different normalizations of q-Bessel–Struve functions.
Saddaf Noreen +5 more
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Univalent functions having univalent derivatives [PDF]
Rocky Mountain Journal of Mathematics, 1986 Let T denote the family of functions \(f(z)=z-\sum^{\infty}_{n=2}a_ nz^ n\), \(a_ n\geq 0\), which are analytic and univalent in the unit disk \(\Delta =\{| z|
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An extremal problem for univalent functions [PDF]
Let S be the class of functions f(z)=z+a2z2 ,… f(0)=0, f′(0)=1 which are regular and univalent in the unit disk |z| x the equation φ′( x)=0 does not have real roots. Since S is a compact class, there exists x . This problem was first proposed by Petru T.
Miodrag IOVANOV
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Univalent functions with logarithmic restrictions [PDF]
, 1991 It is known that univalence property of regular functions is better understood in terms of some restrictions of logarithmic type. Such restrictions are connected with natural stratifications of the studied classes of univalent functions.
Grinshpan, A.
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Integrated Partial Sums of Convolutions of Univalent Functions [PDF]
, 1993 Let S be the set of normalized univalent functions. We show that for f(z) = ∑∞k = 1akzk, g(z) = ∑∞k = 1bkzk ∈ S, [formula] if n < 3 or n > 6. For n = 4 we obtain the corresponding result if g is restricted to the class of close-to-convex functions.
Ronning, F.
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